>Higher-Up Crew
Aaron Springer (Creator)
Clayton Morrow (Supervising Producer)
Merriwether Williams (Co-Producer and Story Editor)
Andrew Overtoom (Supervising Animation Director; also a boarder on Calzones and Ol' MacBilly)
Chuck Klein (Storyboard Supervisor; also a boarder on Surviving Billy, though not credited as a writer)

>Story Writers
Aaron Springer (every episode)
Clayton Morrow (every episode)
Merriwether Williams (every episode except The Date)
Sam Cherington (Lab Friends... Forever?, Surviving Billy, Calzones, Crab Hands, Hey Judy, Welcome to the Hag House, K is for Klutz, The Telltale Wart, and Jared)
Damon Jones (Calzones, The Troggies Next Door, The Mushroom Prince, Count Wretcher, Hey Judy, Welcome to the Hag House, Beastie Billy, Zartran, and Tommy X)
Derek Iversen (The Troggies Next Door, Welcome to the Hag House, Beastie Billy, Zartran, Tommy X, Billy/Willie, O' MacBilly, and Wretcherous Treachery)
Andrew Overtoom (Crab Hands, The Troggies Next Door, Welcome to the Hag House, Beatie Billy, Zartran, K is for Klutz, Tommy X, Billy/Willie, The Telltale Wart, Silly Spheres, Wretcherous Treachery, Jared and possibly the eps he boarded as well)
Kyle More (Billy/Willie, Ol MacBilly, and Wretcherous Treachery)
Derek Drymon (Crab Hands)
Dave Tennant (Crab Hands)

>Board Teams (note: Springer and Morrow are credited as boarders on every episode except Crab Hands, The Mushroom Prince, Hey Judy, and Beastie Billy)
>Aaron Springer
The Date (given how the only other credited writer was Morrow with no sign of Merriwether, I bet this was the first episode written/boarded, possibly the pilot)

>Zeus Cervas and Kenny Pittenger
Lab Friends... Forever?
Hey Judy
Welcome to the Hag House
Zartran
K is for Klutz (with Wolf Rudiger-Bloss and Luke Brookshier)

>Charlotte Jackson and Ryan Jouas
Surviving Billy (Jouas not credited as a writer)

>Luke Brookshier and Charlotte Jackson
The Mushroom Prince
Beastie Billy

>Wolf Rudiger-Bloss and Luke Brookshier
K is for Klutz (with Zeus Cervas and Kenny Pittenger)

>Drew Applegate and Dennis Messner
Calzones
The Troggies Next Door (also with Casey Alexander)
Billy/Willie
Ol' MacBilly (with Mike Bertino and Sarah Oleksyk)

>Andy Gonsalves and Chong Suk Lee
Crab Hands
Count Wretcher (also with Kenny Pittenger)

>Ben Adams and Jonny Van Orman
Tommy X

>Casey Alexander (Board Director)
The Telltale Wart (with Ben Adams and Mike Bertino)

>Kenny Pittenger (Board Director)
Silly Spheres (with Ben Adams)

>Zeus Cervas (Board Director)
Wretcherous Treachery (with Johnny Van Orman)

>Kenny Pittenger and Chris Reccardi
Jared